ENS 43787
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ENS Event | |
|---|---|
15:15 Nov 15, 2007 | |
| Title | Safety System Actuation Due to Incidental Uf6 Release |
| Event Description | On 11/15/2007 at 0915 instrument mechanics were performing a cell datum calibration in the C-333 Unit 4 Cell 2 cell panel when a strong odor assumed to be HF was noticed after the stage 1 high side pressure valve was opened. The 1/4" valve is on a manifold which accesses pressure taps in various locations in the cell. When the odor was detected a UF6 leak detection head located in the cell panel ducting also actuated. The mechanic opening the valve, immediately closed the valve when the odor was detected and they immediately left the area. HF samples taken a few minutes later in the area around the cell panel were all negative. Precautionary urine samples have been taken from the individuals involved and analysis are being run on the samples.
It is believed a small incidental UF6 release occurred when the small high side valve was momentarily opened and actuated the UF6 detection system head which is a Q safety system component. At the time of the incident the cell was in operation in a mode which required the system to be operational. This is being reported based on SAR 6.9 Table 1, J2. The NRC Resident Inspector has been notified of this event. |
| Where | |
|---|---|
| Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2) | |
| License number: | GDP-1 |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+18.98 h0.791 days <br />0.113 weeks <br />0.026 months <br />) | |
| Opened: | Billy Wallace 10:14 Nov 16, 2007 |
| NRC Officer: | Jason Kozal |
| Last Updated: | Nov 16, 2007 |
| 43787 - NRC Website
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Paducah Gaseous Diffusion Plant with Other Unspec Reqmnt | |
WEEKMONTHYEARENS 495442013-11-17T20:17:00017 November 2013 20:17:00
[Table view]Other Unspec Reqmnt, 10 CFR 76.120(a)(4) Alert Due to Storm Damage on Site ENS 486802012-12-23T05:20:00023 December 2012 05:20:00 Other Unspec Reqmnt Minor Incidental Uranium Hexafluoride Release ENS 473072011-09-30T13:10:00030 September 2011 13:10:00 Other Unspec Reqmnt Hydraulic Leak Contained on Site- State Officials Notified ENS 470992011-07-27T09:15:00027 July 2011 09:15:00 Other Unspec Reqmnt, 10 CFR 76.120(a)(4) Alert Declared Due to Onsite Release of Fluorine/Chlorinated Fluorine Gas Mixture ENS 464872010-12-17T15:37:00017 December 2010 15:37:00 Other Unspec Reqmnt Diesel Fuel Oil Spill Contained on Site - Federal and State Officials Notified ENS 447762009-01-15T02:39:00015 January 2009 02:39:00 Other Unspec Reqmnt Ongoing Recirculating Cooling Water Leak at C337A Facility ENS 447442008-12-28T10:45:00028 December 2008 10:45:00 Other Unspec Reqmnt 24 Hour Report - Actuation of Leak Detection System Due to Minor Process Gas Leak ENS 446042008-10-27T07:39:00027 October 2008 07:39:00 Other Unspec Reqmnt Concurrent Notification to Nrc of Pcb Spill ENS 444482008-08-28T16:43:00028 August 2008 16:43:00 10 CFR 76.120(c)(2), Other Unspec Reqmnt Leak in High Pressure Fire Water System ENS 443102008-06-21T04:25:00021 June 2008 04:25:00 Other Unspec Reqmnt, Part 70 App A (C) Notification to Kentucky Ert Due to Exceeding Permit Limits at Outfall ENS 438642007-12-23T09:58:00023 December 2007 09:58:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Small Uf6 Process Leak ENS 438292007-12-07T02:44:0007 December 2007 02:44:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Unplanned Safety System Actuation and Contamination Event ENS 438282007-12-06T21:50:0006 December 2007 21:50:00 Other Unspec Reqmnt, 10 CFR 76.120(c)(1) Unplanned Safety System Actuation and Contamination Event ENS 437872007-11-15T15:15:00015 November 2007 15:15:00 Other Unspec Reqmnt Safety System Actuation Due to Incidental Uf6 Release ENS 436622007-09-25T05:05:00025 September 2007 05:05:00 Other Unspec Reqmnt Leaking Sulfuric Acid Tank ENS 433852007-05-24T13:15:00024 May 2007 13:15:00 Other Unspec Reqmnt Offsite Notification Made to Another Government Agency ENS 421442005-11-15T19:30:00015 November 2005 19:30:00 Other Unspec Reqmnt Reportable Incident Due to Deviation from Technical Specification Requirements ENS 414652005-03-06T17:40:0006 March 2005 17:40:00 Other Unspec Reqmnt Small Hydrogen Fluoride Leak 2013-11-17T20:17:00 | |
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